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Ying Yong Sheng Tai Xue Bao

Title:		[Effects of water supply and 3-methylphenol on soil microbial diversity and enzyme activity in wheat field intercropped with horse bean]
Author(s):		Chai Q; Huang G; Huang P;
Address:		"Institute of Agro-ecological Engineering, Gansu Agricultural University, Lanzhou, China. chaiq@gsau.edu.cn"
Journal Title:		Ying Yong Sheng Tai Xue Bao
Year:		2006
Volume:		17
Issue:		9
Page Number:		1624 - 1628
DOI:
ISSN/ISBN:		1001-9332 (Print) 1001-9332 (Linking)
Abstract:		"With pot experiment, this paper studied the effects of water supply levels (45%, 60% and 75% of soil water hold capacity) and allelochemical 3-methylphenol (300 x 10(-6) mol x kg(-1) soil) on the soil microbial diversity and enzyme activity in mono-cropped and horse bean-intercropped wheat fields during vigorous growth period. The results showed that with the decrease of water supply, the numbers of soil bacteria, fungi and actinomytes in the two fields decreased significantly, and 3-methylphenol enlarged this negative effect. 3-methylphonel had a negative effect on soil microbial diversity, but the increase of water supply could weaken this effect in intercropped field. The strongest allelopathic effect of 3-methylphenol was observed in mono-cropped field when the water supply was 75% of soil water hold capacity, while intercropping could maintain a relatively stable soil microbial diversity, compared to the mono-cropping with 3-methylphenol and low water supply. The allelopathic effect of 3-methylphenol was not significant on soil catalase activity, but significant on soil urease and phosphatase activities. Water supply level affected soil enzyme activity significantly, the lower the water supply level, the weaker the soil enzyme activity was. The interactions of water supply with 3-methyl phenol or cropping pattern were not significant, but intercropping could significantly affect the activities of soil catalase and phosphatase"
Keywords:		Agriculture/methods Biodiversity Catalase/metabolism Cresols/*pharmacology Pheromones/pharmacology Phosphoric Monoester Hydrolases/metabolism Soil/analysis *Soil Microbiology Triticum/*growth & development Vicia faba/*growth & development Water/*analysis;
Notes:		"MedlineChai, Qiang Huang, Gaobao Huang, Peng chi Research Support, Non-U.S. Gov't China 2006/12/07 Ying Yong Sheng Tai Xue Bao. 2006 Sep; 17(9):1624-8"